Although the new CPU is 64-bit, it remains fully compatible with the ARMv7 CPU used in the Raspberry Pi 2.

Your 32-bit Xojo apps will continue to work fine in the 32-bit version of Raspbian (the only version available right now) on the Raspberry Pi 3. Once you apply the latest Raspbian updates, you can even just take your SD card from your Raspberry Pi 2 and plug it into a Raspberry Pi 3. To run the updates, just run these commands from the terminal on the Raspberry Pi: